   "Cascalog subquery to fully process a WGS84 float array at the
   supplied resolution (`:step`, within `ascii-map`) into tuples
   suitable for comparison to any MODIS dataset at the supplied modis
-  resolution (`m-res`), partitioned by the supplied chunk size."
+  resolution `m-res`, partitioned by the supplied chunk size."
   [m-res ascii-map chunk-size tile-seq source]
   (let [rnd (int (* 100000 (rand)))
         tmp (hfs-seqfile (str "/tmp/" rnd))]

;; two sets. We accomplish this by feeding every tuple into
;; `forma.hadoop.predicate/add-fields` with argument `m-res`, the
;; supplied MODIS resolution into which we're translating the PRECL
;; sets. `identity` produces the common dynamic variable
;; `?spatial-res`, needed by `fancy-index`.

(defn cross-join


(defn rain-months
  "Cascalog subquery to extract all months from a directory of PREC/L
  datasets with the supplied map of WGS84 dataset information, paired
  with a datestring of the format `yyyy-mm-dd`. (See `forma.static`
  for examples of well-formed wgs84 dataset maps.)

  Source can be any tap that supplies PRECL files named
  precl_mon_v1.0.lnx.YYYY.gri0.5m(.gz, optionally)."
  [ascii-info source]
  (let [step (:step ascii-info)]
    (<- [?dataset ?temporal-res ?date ?raindata]
